[Kr] 4d¹⁰ 5s² 5p¹

Here's a breakdown:

* [Kr] represents the electron configuration of krypton, the noble gas preceding indium. This is a shorthand way of indicating the filled inner shells.

* 4d¹⁰ indicates that the 4d subshell has 10 electrons.

* 5s² indicates that the 5s subshell has 2 electrons.

* 5p¹ indicates that the 5p subshell has 1 electron.

Let me know if you have any other questions!